Question

question 47
the combining form or term that literally means \internal organs\ is:
viscer/o-
chole/docho-
cardi/o-
an/cone-

question 48
a pet scan is used to detect metabolism of glucose by the:
spinal cord
brain
lungs
gallbladder

question 49
the term \bronchoscope\ literally means:
instrument to view the eye
instrument to view the lungs
instrument to view the ear
instrument to view trachea - like structures

Explanation:

For Question 47, the combining form "viscer/o -" refers to internal organs. "Chole/docho -" is related to the bile duct, "cardi/o -" to the heart, and "an/cone -" is not a common medical combining form for internal organs.
For Question 48, a PET scan is often used to detect glucose metabolism in the brain. The spinal cord, lungs, and gallbladder are not the main organs for which PET - scans are used to detect glucose metabolism.
For Question 49, "Bronchoscope" is made up of "broncho -" (related to the bronchi, trachea - like structures) and "- scope" (instrument for viewing). So it is an instrument to view trachea - like structures.

Answer:

Question 47: viscer/o-
Question 48: brain
Question 49: instrument to view trachea-like structures